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经营范围
发明名称
PIPE PROTECTOR
摘要
申请公布号
EP1012437(A1)
申请公布日期
2000.06.28
申请号
EP19970948428
申请日期
1997.11.21
申请人
HERMES L.L.C.
发明人
VON GYNZ-REKOWSKI, GUNTHER
分类号
E21B17/10;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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